D defs.my
Entry 1 sense Webster, 1913

Felonious

/fə-lō'nē-əs/ · Fe·lo·ni·ous · IPA /fɛlˈoʊniːəs/
01 a. Having the quality of felony; malignant; malicious; villainous; traitorous; perfidious; in a legal sense, done with intent to commit a crim…
  1. 1.
    Having the quality of felony; malignant; malicious; villainous; traitorous; perfidious; in a legal sense, done with intent to commit a crime; as, felonious homicide.
    “O thievish Night, Why should'st thou, but for some felonious end, In thy dark lantern thus close up the stars?” Milton.